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Java/JavaFX ProcessHandle possibly not finding all processes (Linux/Debian)

I've a JavaFX application where I've a list of a bunch of script files. Once the application loads, it reads it and and checks which ones are running.
To do that I use a ProcessHandle, as mentioned in various examples here on StackOverflow and other guides/tutorials on the internet.
The problem is, it never finds any of them. There for I programmatically started one, which I know for a fact that it will be running, via Process process = new ProcessBuilder("/path/to/file/my_script.sh").start(); - and it won't find this one either.
Contents of my_script.sh:
#!/bin/bash
echo "Wait for 5 seconds"
sleep 5
echo "Completed"
Java code:
// List of PIDs which correspond to the processes shown after "INFO COMMAND:"
System.out.println("ALL PROCESSES: " + ProcessHandle.allProcesses().toList());
Optional<ProcessHandle> scriptProcessHandle = ProcessHandle.allProcesses().filter(processHandle -> {
System.out.println("INFO COMMAND: " + processHandle.info().command());
Optional<String> processOptional = processHandle.info().command();
return processOptional.isPresent() && processOptional.get().equals("my_script.sh");
}).findFirst();
System.out.println("Script process handle is present: " + scriptProcessHandle.isPresent());
if (scriptProcessHandle.isPresent()) { // Always false
// Do stuff
}
Thanks to the good old fashioned System.out.println(), I noticed that I get this in my output console every time:
ALL PROCESSES: [1, 2, 28, 85, 128, 6944, 21174, 29029, 29071]
INFO COMMAND: Optional[/usr/bin/bwrap]
INFO COMMAND: Optional[/usr/bin/bash]
INFO COMMAND: Optional[/app/idea-IC/jbr/bin/java]
INFO COMMAND: Optional[/app/idea-IC/bin/fsnotifier]
INFO COMMAND: Optional[/home/username/.jdks/openjdk-17.0.2/bin/java]
INFO COMMAND: Optional[/usr/bin/bash]
INFO COMMAND: Optional[/home/username/.jdks/openjdk-17.0.2/bin/java]
INFO COMMAND: Optional[/home/username/.jdks/openjdk-17.0.2/bin/java]
INFO COMMAND: Optional[/usr/bin/bash]
Script process handle is present: false
The first line in the Javadoc of ProcessHandle.allProcess() reads:
Returns a snapshot of all processes visible to the current process.
So how come I can't see the rest of the operating system's processes?
I'm looking for a non-os-dependent solution, if possible. Why? For better portability and hopefully less maintenance in the future.
Notes:
A popular solution for GNU/Linux seems to be to check the proc entries, but I don't know if that would work for at least the majority of the most popular distributions - if it doesn't, adding support for them in a different way, would create more testing and maintenance workload.
I'm aware of ps, windir, tasklist.exe possible solutions (worst comes to worst).
I found the JavaSysMon library but it seems dead and unfortunately:
CPU speed on Linux only reports correct values for Intel CPUs
Edit 1:
I'm on Pop_OS! and installed IntelliJ via the PopShop as flatpak.
In order to start it as root as suggested by mr mcwolf, I went to /home/username/.local/share/flatpak/app/com.jetbrains.IntelliJ-IDEA-Community/x86_64/stable/active/export/bin and found com.jetbrains.IntelliJ-IDEA-Community file.
When I run sudo ./com.jetbrains.IntelliJ-IDEA-Community or sudo /usr/bin/flatpak run --branch=stable --arch=x86_64 com.jetbrains.IntelliJ-IDEA-Community in my terminal, I get error: app/com.jetbrains.IntelliJ-IDEA-Community/x86_64/stable not installed
So I opened the file and ran its contents:
exec /usr/bin/flatpak run --branch=stable --arch=x86_64 com.jetbrains.IntelliJ-IDEA-Community "$#"
This opens IntelliJ, but not as root, so instead I ran:
exec sudo /usr/bin/flatpak run --branch=stable --arch=x86_64 com.jetbrains.IntelliJ-IDEA-Community "$#"
Which prompts for a password and when I write it in, the terminal crashes.
Edit 1.1:
(╯°□°）╯︵ ┻━┻ "flatpak run" is not intended to be ran with sudo
Edit 2:
As mr mcwolf said, I downloaded the IntelliJ from the official website, extracted it and ran the idea.sh as root.
Now a lot more processes are shown. 1/3 of them show up as INFO COMMAND: Optional.empty.
scriptProcessHandle.isPresent() is still unfortunately returning false. I searched through them and my_script.sh is nowhere to be found. I also tried processOptional.isPresent() && processOptional.get().equals("/absolute/path/to/my_script.sh") but I still get false on isPresent() and it's not in the list of shown processes.
Though the last sentence might be a different problem. I'll do more digging.
Edit 3:
Combining .commandLine() and .contains() (instead of .equals()) solves the problem mentioned in "Edit 2".
Optional<ProcessHandle> scriptProcessHandle = ProcessHandle.allProcesses().filter(processHandle -> {
System.out.println("INFO COMMAND LINE: " + processHandle.info().commandLine());
Optional<String> processOptional = processHandle.info().commandLine();
return processOptional.isPresent() && processOptional.get().contains("/absolute/path/to/my_script.sh");
}).findFirst();
System.out.println("Script process handle is present: " + scriptProcessHandle.isPresent());
if (scriptProcessHandle.isPresent()) { // Returns true
// Do stuff
}
.commandLine() also shows script arguments, so that must be kept in mind.

elasticsearch can't install head plugin

I am planing to install head pluging for elasticsearch.
in both these two official documentation, http://mobz.github.io/elasticsearch-head/ and http://docs.couchbase.com/admin/elastic/install-plugin.html they said to use this:
bin/plugin -install mobz/elasticsearch-head
I did, but i got the following error:
PS C:\elasticsearch-1.3.9\elasticsearch-1.3.9> bin/plugin -install mobz/elasticsearch-head
Exception in thread "main" org.elasticsearch.common.settings.SettingsException: Failed to load settings from [file:/C:/
lasticsearch-1.3.9/elasticsearch-1.3.9/config/elasticsearch.yml]
at org.elasticsearch.common.settings.ImmutableSettings$Builder.loadFromStream(ImmutableSettings.java:947)
at org.elasticsearch.common.settings.ImmutableSettings$Builder.loadFromUrl(ImmutableSettings.java:931)
at org.elasticsearch.node.internal.InternalSettingsPreparer.prepareSettings(InternalSettingsPreparer.java:77)
at org.elasticsearch.plugins.PluginManager.main(PluginManager.java:382)
Caused by: unacceptable character ' ' (0x0) special characters are not allowed
in "'reader'", position 13489
at org.elasticsearch.common.jackson.dataformat.yaml.snakeyaml.reader.StreamReader.checkPrintable(StreamReader.j
va:93)
at org.elasticsearch.common.jackson.dataformat.yaml.snakeyaml.reader.StreamReader.update(StreamReader.java:192)
at org.elasticsearch.common.jackson.dataformat.yaml.snakeyaml.reader.StreamReader.peek(StreamReader.java:146)
at org.elasticsearch.common.jackson.dataformat.yaml.snakeyaml.scanner.ScannerImpl.scanToNextToken(ScannerImpl.j
va:1199)
at org.elasticsearch.common.jackson.dataformat.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.j
va:289)
at org.elasticsearch.common.jackson.dataformat.yaml.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:2
6)
at org.elasticsearch.common.jackson.dataformat.yaml.snakeyaml.parser.ParserImpl$ParseImplicitDocumentStart.prod
ce(ParserImpl.java:195)
at org.elasticsearch.common.jackson.dataformat.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:158)
at org.elasticsearch.common.jackson.dataformat.yaml.snakeyaml.parser.ParserImpl.getEvent(ParserImpl.java:168)
at org.elasticsearch.common.jackson.dataformat.yaml.YAMLParser.nextToken(YAMLParser.java:331)
at org.elasticsearch.common.xcontent.json.JsonXContentParser.nextToken(JsonXContentParser.java:50)
at org.elasticsearch.common.settings.loader.XContentSettingsLoader.load(XContentSettingsLoader.java:60)
at org.elasticsearch.common.settings.loader.XContentSettingsLoader.load(XContentSettingsLoader.java:45)
at org.elasticsearch.common.settings.loader.YamlSettingsLoader.load(YamlSettingsLoader.java:46)
at org.elasticsearch.common.settings.ImmutableSettings$Builder.loadFromStream(ImmutableSettings.java:944)
... 3 more
as I was trying to diagnosis the error, I found that there might b something wrong in elasticsearch.yml file. I went to that file, and opened it using notpadd++, and it was all commented except the last three-four lines, they were letters not understandable. this is a print screen of them:
could you help please

In that file you shouldn't have those chars. Remove them and start over. Or take a clean instance of ES, take the config file from that and use it.

Errror when packaging sencha touch for ios debug

I'm trying to package a sencha application for ios. But when I in the terminal do: "sencha package build package.json" I get the following
: [ERR] null
at com.sencha.command.environment.AppEnvironment.(AppEnvironment.java:48)
at com.sencha.command.environment.BuildEnvironment.load(BuildEnvironment.java:193)
at com.sencha.command.Sencha.loadBuildEnvironment(Sencha.java:374)
at com.sencha.command.Sencha.main(Sencha.java:127)
I probably screwed something up with the certficates and provisioning profiles, but, I'm not sure if this is some kind of environment error, ie sencha cmd not finding path of Java. The error seems to suggest this, but the cmd works with other commands. I can, for example, create a new app with "sencha app generate myapp ..myapp".
So, my question is really, is the error caused by some environment problem, and if so, what to do about it, or is his a problem related to some errror in my packager.json. Here's my packager.json file.
All help much appreciated!
{
"applicationName":"app",
"applicationId":"com.appname",
"bundleSeedId":"xxxxxxxx",
"versionString":"1.0",
"iconName":"icon.png",
"icon": {
"36":"resources/icons/Icon_Android36.png",
"48":"resources/icons/Icon_Android48.png",
"57":"resources/icons/Icon.png",
"72":"resources/icons/Icon~ipad.png",
"114":"resources/icons/Icon#2x.png",
"144":"resources/icons/Icon~ipad#2x.png"
},
"inputPath":"/Applications/XAMPP/xamppfiles/htdocs/app/",
"outputPath":"../build/",
"configuration":"Debug",
"platform":"iOS",
"deviceType":"Universal",
"certificatePath":"../cert/mycert.p12",
"certificateAlias":"iPhone Developer:",
"certificatePassword":"",
"provisionProfile":"../cert/name.mobileprovision",
"notificationConfiguration":"",
"orientations": [
"portrait",
"landscapeLeft",
"landscapeRight",
"portraitUpsideDown"
]
}

"Could not read jar file contents from \FooBar\libs\android-support-v4.jar "?

I added the support library for API level 4 and up as is given in this link : http://developer.android.com/tools/extras/support-library.html
My code was working. But all of a sudden, it has started showing the following error :
"Could not read jar file contents from \FooBar\libs\android-support-v4.jar"
What could be the reason?
EDIT: It shows the following error too :
"Unable to update index for central|http://repo1.maven.org/maven2"
And a few more warnings like this ->
"While loading class "com.android.ide.eclipse.adt.internal.resources.manager.GlobalProjectMonitor$IResourceEventListener", thread "Thread[main,6,main]" timed out waiting (5003ms) for thread "Thread[org.eclipse.jdt.internal.ui.text.JavaReconciler,1,main]" to finish starting bundle "com.android.ide.eclipse.adt_20.0.3.v201208082019-427395 [351]". To avoid deadlock, thread "Thread[main,6,main]" is proceeding but "com.android.ide.eclipse.adt.internal.resources.manager.GlobalProjectMonitor$IResourceEventListener" may not be fully initialized."
UPDATE : I thought I fixed it but the problem keeps recurring.

Problems using Matlab Builder JA

First of all I would like to thank in advance everyone for reading such a long post. I really appreciate your help.
The thing is that I've been doing some research on how to "connect" Matlab and Java for a project I am working on for university. I figured that the most suitable option was using Matlab Builder JA, but I'm having a lot of troubles with it.
I follow step by step the instructions described on a tutorial (the link of the video in below) but get compilation errors over and over, and I really don't know how to fix them. The tutorial is about creating a Java package (demo.jar) with MATLAB ("com.demo"), which contains a class (MLTestClass) with a function makeSqr(n) which returns an n × n square matrix. Then I go to Eclipse, I add to the project both libraries javabuilder.jar and demo.jar and then create the following class:
public class Driver {
public static void main (String[] args) {
MLTestClass x = null;
Object result [] = null;
try {
x = new MLTestClass ();
result = x.makeSqr (1, 5);
System.out.println (result [0]);
} catch (MWException e) {
e.printStackTrace();
}
}
}
Of course I import com.demo.* and com.mathworks.toolbox.javabuilder.*.
Here are the errors the console gives me:
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration.getProxyLibraryDir(MCRConfiguration.java:163)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$MCRRoot.get(MCRConfiguration.java:77)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$MCRRoot.<clinit>(MCRConfiguration.java:87)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration.getMCRRoot(MCRConfiguration.java:92)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$ModuleDir.<clinit>(MCRConfiguration.java:66)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration.getModuleDir(MCRConfiguration.java:71)
at com.mathworks.toolbox.javabuilder.internal.MWMCR.<clinit>(MWMCR.java:1573)
at com.demo.DemoMCRFactory.(DemoMCRFactory.java:122)
at com.demo.MLTestClass.(MLTestClass.java:63)
at Driver.main(Driver.java:12)
Caused by: java.lang.NullPointerException
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$ProxyLibraryDir.get(MCRConfiguration.java:143)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$ProxyLibraryDir.<clinit>(MCRConfiguration.java:158)
... 10 more
Just in case, link tutorial (it's the video): http://www.mathworks.nl/products/javabuilder/description2.html
Anyone has any ideas what the problem could be? It says something about NullPointerException, but I don't know how to solve it as the constructor is provided by the class created with MATLAB. I didn't have any issues installing MCR, and by the way I have MacOS, which I hope is not the source of the problem :).
Again, sorry for the long post and thank you for your time.
Béntor.

Yes, please install MCR. The installation also mentions about setting environmental variables like LD_LIBRARY_PATH etc. If you are using eclipse, i would recommend you update the environmental variables
right click->
properties ->
run/debug settings->
environmental variables
I also had to make sure that variable MCR_CACHE_ROOT pointed to different directory since my home directory was not big enough.

You have install MCR (avaliable in http://www.mathworks.com/products/compiler/mcr/index.html)

None of the above solutions helped me (I already had MCR installed and Macs use DYLD_LIBRARY_PATH instead of LD_LIBRARY_PATH), and noone else online seemed to know. Finally in desperation, I tried editing the DYLD_LIBRARY_PATH and finally got it to work by removing the last part of it: /Applications/MATLAB/MATLAB_Compiler_Runtime/v82/sys/java/jre/maci64/jre/lib
Now the demo application from the tutorial works.
Next comes trying to make my code work.

OS X Paths for Run-Time Deployment
Use these setenv commands to set your MATLAB Runtime paths.
setenv DYLD_LIBRARY_PATH \
mcr_root/version/runtime/maci64 \
mcr_root/version/bin/maci64 \
mcr_root/version/sys/os/maci64
Source: http://www.mathworks.com/help/compiler_sdk/java/mcr-path-settings-for-run-time-deployment.html